Malicious PDF — malware analysis report

Static analysis result for SHA-256 60af3d7605b5e2d7…

MALICIOUS

PDF

77.3 KB Created: 2021-02-23 18:34:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 430e600b1de9d17a48ab862029e81c93 SHA-1: 91bd1662458f86b8c062c1c532bf788be1e739e3 SHA-256: 60af3d7605b5e2d77d89281cbc9ceb52b56e4dfa291257607519cf21c31279c8
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URLs, with a primary one pointing to 'baarspo.ru' and a suspicious 'utm_term' parameter suggesting a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://baarspo.ru/strik?utm_term=ian+hubert+blender+course PDF link annotation
    • https://cdn.sqhk.co/perolurowona/cxzcicP/zobijagoso.pdfIn PDF document text
    • https://cdn.sqhk.co/rinilafexowi/cehat0t/jopedufigazamiw.pdfIn PDF document text
    • https://kogababofaf.weebly.com/uploads/1/3/0/9/130969162/vawadexox.pdfIn PDF document text
    • https://wasexakenisopi.weebly.com/uploads/1/3/5/9/135982815/wikosanok-nawopixutenis-furodakix.pdfIn PDF document text
    • https://tajezutudod.weebly.com/uploads/1/3/1/3/131398094/gerigarixizip.pdfIn PDF document text
    • https://cdn.sqhk.co/torujazelome/ifhayjd/varikejabarukuxujav.pdfIn PDF document text
    • https://cdn.sqhk.co/resesexiraf/3gehi3o/dwight_schrute_glasses_clipart.pdfIn PDF document text
    • https://foroziroxodom.weebly.com/uploads/1/3/4/6/134647192/rikelapidikawuxe.pdfIn PDF document text
    • https://cdn.sqhk.co/xavonepez/cijgdV4/69564535141.pdfIn PDF document text
    • https://bixuduserar.weebly.com/uploads/1/3/4/8/134861961/nikowagufitamenon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484834/normal_60212381e1f5e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374699/normal_6000730c152f7.pdfIn PDF document text
    • https://rupuxiziwaxez.weebly.com/uploads/1/3/4/7/134765543/zufelosudive.pdfIn PDF document text
    • https://cdn.sqhk.co/mutexeze/Oibhf8C/54378221551.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bokofapig/amazon_portable_generator_buying_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/junit_5_test_report_html.pdfIn PDF document text
    • https://s3.amazonaws.com/meludav/roomba_4210_review.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E4 4940 bytes
SHA-256: a3c4e62490a0f1528355aa5ac0c56b9ee1347c8ef3e0e539c2cd7fd69c155854
font_01_sfnt_off0000f386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF386 11324 bytes
SHA-256: 9e899ff5583c20dbada24244d7cef7f85a3dd54070a6e605078da1c4df4db5f5
font_02_sfnt_off00011a3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A3E 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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